Update Docs link to current domain

Author: Brianmitchtay

includes/gateways/class-wc-subscriptions-core-payment-gateways.php

@@ -175,7 +175,7 @@ public static function no_available_payment_methods_message( $no_gateways_messag
 		if ( WC_Subscriptions_Cart::cart_contains_subscription() && ! wcs_is_manual_renewal_enabled() ) {
 			if ( current_user_can( 'manage_woocommerce' ) ) {
 				// translators: 1-2: opening/closing tags - link to documentation.
-				$no_gateways_message = sprintf( __( 'Sorry, it seems there are no available payment methods which support subscriptions. Please see %1$sEnabling Payment Gateways for Subscriptions%2$s if you require assistance.', 'woocommerce-subscriptions' ), '<a href="https://docs.woocommerce.com/document/subscriptions/enabling-payment-gateways-for-subscriptions/">', '</a>' );
+				$no_gateways_message = sprintf( __( 'Sorry, it seems there are no available payment methods which support subscriptions. Please see %1$sEnabling Payment Gateways for Subscriptions%2$s if you require assistance.', 'woocommerce-subscriptions' ), '<a href="https://woocommerce.com/document/subscriptions/payment-gateways/enabling-payment-gateways-for-subscriptions/">', '</a>' );
 			} else {
 				$no_gateways_message = __( 'Sorry, it seems there are no available payment methods which support subscriptions. Please contact us if you require assistance or wish to make alternate arrangements.', 'woocommerce-subscriptions' );
 			}